55.35% is the change from 271 to 421
Calculation steps:
[( 421 - 271 ) ÷ 271] x 100 = 55.35%
Formula
Percentage change = [(421 - 271) / 271] x 100
Subtract the new number by the original number
421 - 271 = 150
150 ÷ 271 = 0.5535055350553506
0.5535055350553506 x 100 = 55.35%